Has O.J. Simpson admitted to Winfrey that he murdered ex-wife?

If reports are to be believed then former football star O.J Simpson has confessed to TV mogul Oprah Winfrey that he murdered his former wife.

The talk show host made headlines recently saying that one of her regrets was never having got the shamed former sportsman to confess to the killing.

And it appears her wish may well have come true with reports Simpson has already told one of her producers in an interview from jail that he knifed ex-wife Nicole Brown Simpson in self-defence - a confession he will now repeat to the talk show queen during a spectacular televised sit down interview.

The chat, which would be held in prison, would be a huge coup for Oprah, whose network, OWN, has suffered a massive hit in ratings recently.

He was famously acquitted in October 1995 of the murders of ex-wife Simpson and her friend Ronald Goldman despite huge amounts of evidence against him.

According to the National Enquirer, the interview is set to be filmed after Simpson confessed he killed the pair in self-defence to a producer from inside prison.

"Oprah has been in touch with O.J. for the past year," the Daily Mail quoted a source as telling the magazine.

She contacted him in prison to explore the possibility that he might give her an interview.

"He has always been a big fan of hers, but for a long time he was reluctant to say he did the crime or give the details of how it happened," the source added.

According to the insider, Simpson recently decided to go through with the confession after he was contacted again by one of Oprah's producers.

"He told the producer: "Tell Oprah that yes, I did it. I killed Nicole, but it was in self-defence. She pulled a knife on me and I had to defend myself"," the insider added.